Hello Chris,
I have sent this patch almost two years ago and reviewed by Avri.
I am not sure why this patch not yet mainlined.
This is gentle reminder.
Do I need to resend the patch?
Thanks,
Shiva
> Subject: [PATCH V3] mmc-utils: let FFU mode use CMD23 and CMD25
>
> As per specification, the host can use either CMD24 or CMD25 in
> closed-ended or open-ended way.
> CMD25 is better option as it can flash the firmware image in one go.
>
> Signed-off-by: Shivamurthy Shastri <sshivamurthy@xxxxxxxxxx>
> Reviewed-by: Avri Altman <avri.altman@xxxxxxx>
>
> ---
>
> V3:
> - Checking the firmware size with MMC_IOC_MAX_BYTES
>
> ---
>
> V2:
> - Removed optional parameter '-c'
> - FFU mode use CMD25 instead of CMD24
> - CMD25 used as closed-ended
> ---
> mmc.h | 2 ++
> mmc_cmds.c | 70 ++++++++++++++++++++++++++++++------------------------
> 2 files changed, 41 insertions(+), 31 deletions(-)
>
> diff --git a/mmc.h b/mmc.h
> index 285c1f1..a4cbba4 100644
> --- a/mmc.h
> +++ b/mmc.h
> @@ -25,10 +25,12 @@
> /* From kernel linux/mmc/mmc.h */
> #define MMC_SWITCH 6 /* ac [31:0] See below R1b */
> #define MMC_SEND_EXT_CSD 8 /* adtc R1 */
> +#define MMC_STOP_TRANSMISSION 12 /* ac R1b */
> #define MMC_SEND_STATUS 13 /* ac [31:16] RCA R1 */
> #define R1_SWITCH_ERROR (1 << 7) /* sx, c */
> #define MMC_SWITCH_MODE_WRITE_BYTE 0x03 /* Set target to value
> */
> #define MMC_READ_MULTIPLE_BLOCK 18 /* adtc [31:0] data addr R1 */
> +#define MMC_SET_BLOCK_COUNT 23 /* adtc [31:0] data addr R1 */
> #define MMC_WRITE_BLOCK 24 /* adtc [31:0] data addr R1 */
> #define MMC_WRITE_MULTIPLE_BLOCK 25 /* adtc R1 */
> #define MMC_SET_WRITE_PROT 28 /* ac [31:0] data addr R1b */
> diff --git a/mmc_cmds.c b/mmc_cmds.c
> index 19a9da1..43e1f8b 100644
> --- a/mmc_cmds.c
> +++ b/mmc_cmds.c
> @@ -2414,12 +2414,13 @@ int do_ffu(int nargs, char **argv)
> int sect_done = 0, retry = 3, ret = -EINVAL;
> unsigned int sect_size;
> __u8 ext_csd[512];
> - __u8 *buf;
> + __u8 *buf = NULL;
> __u32 arg;
> off_t fw_size;
> ssize_t chunk_size;
> char *device;
> - struct mmc_ioc_multi_cmd *multi_cmd;
> + struct mmc_ioc_multi_cmd *multi_cmd = NULL;
> + __u32 blocks = 1;
>
> if (nargs != 3) {
> fprintf(stderr, "Usage: ffu <image name> </path/to/mmcblkX>
> \n");
> @@ -2439,14 +2440,6 @@ int do_ffu(int nargs, char **argv)
> exit(1);
> }
>
> - buf = malloc(512);
> - multi_cmd = calloc(1, sizeof(struct mmc_ioc_multi_cmd) +
> - 3 * sizeof(struct mmc_ioc_cmd));
> - if (!buf || !multi_cmd) {
> - perror("failed to allocate memory");
> - goto out;
> - }
> -
> ret = read_extcsd(dev_fd, ext_csd);
> if (ret) {
> fprintf(stderr, "Could not read EXT_CSD from %s\n", device);
> @@ -2471,9 +2464,17 @@ int do_ffu(int nargs, char **argv)
> }
>
> fw_size = lseek(img_fd, 0, SEEK_END);
> + if (fw_size > MMC_IOC_MAX_BYTES || fw_size == 0) {
> + fprintf(stderr, "Wrong firmware size");
> + goto out;
> + }
>
> - if (fw_size == 0) {
> - fprintf(stderr, "Firmware image is empty");
> + /* allocate maximum required */
> + buf = malloc(fw_size);
> + multi_cmd = calloc(1, sizeof(struct mmc_ioc_multi_cmd) +
> + 4 * sizeof(struct mmc_ioc_cmd));
> + if (!buf || !multi_cmd) {
> + perror("failed to allocate memory");
> goto out;
> }
>
> @@ -2483,14 +2484,19 @@ int do_ffu(int nargs, char **argv)
> goto out;
> }
>
> + /* calculate required fw blocks for CMD25 */
> + blocks = fw_size / sect_size;
> +
> /* set CMD ARG */
> arg = ext_csd[EXT_CSD_FFU_ARG_0] |
> ext_csd[EXT_CSD_FFU_ARG_1] << 8 |
> ext_csd[EXT_CSD_FFU_ARG_2] << 16 |
> ext_csd[EXT_CSD_FFU_ARG_3] << 24;
>
> + /* prepare multi_cmd for FFU based on cmd to be used */
> +
> /* prepare multi_cmd to be sent */
> - multi_cmd->num_of_cmds = 3;
> + multi_cmd->num_of_cmds = 4;
>
> /* put device into ffu mode */
> multi_cmd->cmds[0].opcode = MMC_SWITCH;
> @@ -2501,37 +2507,42 @@ int do_ffu(int nargs, char **argv)
> multi_cmd->cmds[0].flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B |
> MMC_CMD_AC;
> multi_cmd->cmds[0].write_flag = 1;
>
> + /* send block count */
> + multi_cmd->cmds[1].opcode = MMC_SET_BLOCK_COUNT;
> + multi_cmd->cmds[1].arg = blocks;
> + multi_cmd->cmds[1].flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 |
> MMC_CMD_AC;
> +
> /* send image chunk */
> - multi_cmd->cmds[1].opcode = MMC_WRITE_BLOCK;
> - multi_cmd->cmds[1].blksz = sect_size;
> - multi_cmd->cmds[1].blocks = 1;
> - multi_cmd->cmds[1].arg = arg;
> - multi_cmd->cmds[1].flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 |
> MMC_CMD_ADTC;
> - multi_cmd->cmds[1].write_flag = 1;
> - mmc_ioc_cmd_set_data(multi_cmd->cmds[1], buf);
> + multi_cmd->cmds[2].opcode = MMC_WRITE_MULTIPLE_BLOCK;
> + multi_cmd->cmds[2].blksz = sect_size;
> + multi_cmd->cmds[2].blocks = blocks;
> + multi_cmd->cmds[2].arg = arg;
> + multi_cmd->cmds[2].flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 |
> MMC_CMD_ADTC;
> + multi_cmd->cmds[2].write_flag = 1;
> + mmc_ioc_cmd_set_data(multi_cmd->cmds[2], buf);
>
> /* return device into normal mode */
> - multi_cmd->cmds[2].opcode = MMC_SWITCH;
> - multi_cmd->cmds[2].arg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
> + multi_cmd->cmds[3].opcode = MMC_SWITCH;
> + multi_cmd->cmds[3].arg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
> (EXT_CSD_MODE_CONFIG << 16) |
> (EXT_CSD_NORMAL_MODE << 8) |
> EXT_CSD_CMD_SET_NORMAL;
> - multi_cmd->cmds[2].flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B |
> MMC_CMD_AC;
> - multi_cmd->cmds[2].write_flag = 1;
> + multi_cmd->cmds[3].flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B |
> MMC_CMD_AC;
> + multi_cmd->cmds[3].write_flag = 1;
>
> do_retry:
> /* read firmware chunk */
> lseek(img_fd, 0, SEEK_SET);
> - chunk_size = read(img_fd, buf, 512);
> + chunk_size = read(img_fd, buf, fw_size);
>
> - while (chunk_size > 0) {
> + if (chunk_size > 0) {
> /* send ioctl with multi-cmd */
> ret = ioctl(dev_fd, MMC_IOC_MULTI_CMD, multi_cmd);
>
> if (ret) {
> perror("Multi-cmd ioctl");
> /* In case multi-cmd ioctl failed before exiting from ffu
> mode */
> - ioctl(dev_fd, MMC_IOC_CMD, &multi_cmd->cmds[2]);
> + ioctl(dev_fd, MMC_IOC_CMD, &multi_cmd->cmds[3]);
> goto out;
> }
>
> @@ -2558,9 +2569,6 @@ do_retry:
> } else {
> fprintf(stderr, "Programmed %d/%jd bytes\r",
> sect_done * sect_size, (intmax_t)fw_size);
> }
> -
> - /* read the next firmware chunk (if any) */
> - chunk_size = read(img_fd, buf, 512);
> }
>
> if ((sect_done * sect_size) == fw_size) {
> @@ -2597,7 +2605,7 @@ do_retry:
> if (ret) {
> perror("Multi-cmd ioctl failed setting install mode");
> /* In case multi-cmd ioctl failed before exiting from ffu
> mode */
> - ioctl(dev_fd, MMC_IOC_CMD, &multi_cmd->cmds[2]);
> + ioctl(dev_fd, MMC_IOC_CMD, &multi_cmd->cmds[3]);
> goto out;
> }
>
> --
> 2.17.1
